e425abb3a7b27e3d43c7f568ab0f9e15f871eb5a1c3822891c09821813478022

Analysis

max time kernel
135s
max time network
145s
platform
windows7_x64
resource
win7-20230712-en
resource tags

arch:x64arch:x86image:win7-20230712-enlocale:en-usos:windows7-x64system
submitted
20-08-2023 11:59

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General

Target

5641a25871871e0bd6a67e8b05f97d9e_cryptolocker_JC.exe
Size

62KB
MD5

5641a25871871e0bd6a67e8b05f97d9e
SHA1

256b2e83b95be5f366c32558b6131b347a568514
SHA256

e425abb3a7b27e3d43c7f568ab0f9e15f871eb5a1c3822891c09821813478022
SHA512

bc7acd108c7d06e0b16ec8d3d30c74a91b5b4c600a14267e3e521abe9b79cfcced2fd6d279442a955bca8b7f7bc092d1ec8f4a33317435a484882ae22bc36198
SSDEEP

1536:P8mnK6QFElP6n+gymddpMOtEvwDpjYXUXojZt:1nK6a+qdOOtEvwDpjS

Score

7^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2232	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2676	5641a25871871e0bd6a67e8b05f97d9e_cryptolocker_JC.exe

UPX packed file 8 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/2676-54-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/files/0x0007000000012107-65.dat	upx
behavioral1/files/0x0007000000012107-70.dat	upx
behavioral1/memory/2232-71-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/memory/2676-69-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/memory/2676-66-0x0000000002800000-0x0000000002810000-memory.dmp	upx
behavioral1/files/0x0007000000012107-80.dat	upx
behavioral1/memory/2232-81-0x0000000000500000-0x000000000050F311-memory.dmp	upx

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2676 wrote to memory of 2232	2676	5641a25871871e0bd6a67e8b05f97d9e_cryptolocker_JC.exe	28
PID 2676 wrote to memory of 2232	2676	5641a25871871e0bd6a67e8b05f97d9e_cryptolocker_JC.exe	28
PID 2676 wrote to memory of 2232	2676	5641a25871871e0bd6a67e8b05f97d9e_cryptolocker_JC.exe	28
PID 2676 wrote to memory of 2232	2676	5641a25871871e0bd6a67e8b05f97d9e_cryptolocker_JC.exe	28

C:\Users\Admin\AppData\Local\Temp\5641a25871871e0bd6a67e8b05f97d9e_cryptolocker_JC.exe
"C:\Users\Admin\AppData\Local\Temp\5641a25871871e0bd6a67e8b05f97d9e_cryptolocker_JC.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2676
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2232

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
62KB

MD5
6dac83d2c1069cb581d184fcfd8af52e

SHA1
96046ab616e5080b8230147f39b73a3d77448cdc

SHA256
65f11714bb4d7d72821e2067b508fb9add4cef0eb381f354ddf0f76810e23dcb

SHA512
36f223f12196a1d59aef0fae36d5a7d6db0caec9a0894af847649dfba649b04d23b78e2df1da1e513b9f08e9242cf4ed417693c6ffd57cc35fab82071407d835

Download Submit
C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
62KB

MD5
6dac83d2c1069cb581d184fcfd8af52e

SHA1
96046ab616e5080b8230147f39b73a3d77448cdc

SHA256
65f11714bb4d7d72821e2067b508fb9add4cef0eb381f354ddf0f76810e23dcb

SHA512
36f223f12196a1d59aef0fae36d5a7d6db0caec9a0894af847649dfba649b04d23b78e2df1da1e513b9f08e9242cf4ed417693c6ffd57cc35fab82071407d835

Download Submit
\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
62KB

MD5
6dac83d2c1069cb581d184fcfd8af52e

SHA1
96046ab616e5080b8230147f39b73a3d77448cdc

SHA256
65f11714bb4d7d72821e2067b508fb9add4cef0eb381f354ddf0f76810e23dcb

SHA512
36f223f12196a1d59aef0fae36d5a7d6db0caec9a0894af847649dfba649b04d23b78e2df1da1e513b9f08e9242cf4ed417693c6ffd57cc35fab82071407d835

Download Submit
memory/2232-73-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2232-71-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2232-74-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/2232-81-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2676-56-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2676-57-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/2676-69-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2676-66-0x0000000002800000-0x0000000002810000-memory.dmp

Filesize
64KB

Download
memory/2676-54-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2676-55-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download